ALMOST 700 Meals on Wheels services across Australia will celebrate the 61st National Meals on Wheels Day tomorrow, including in Blacktown, Holroyd, The Hills and Parramatta.

At Blacktown, clients will receive a gift and will be treated to a special morning tea alongside the service's volunteers.

Client service officer Amber Bulbert, of Rooty Hill, said tomorrow's milestone was an important occasion to recognise not only the contribution of volunteers, but how the clients "make the service what it is".

Ms Bulbert said the Blacktown service delivered meals to those with limited mobility and the frail aged, but also provided a social space for clients to meet with friends.

"Some of the comments I've been hearing from clients is that they wouldn't even miss a day," she said. "It's just providing that social contact, which is very important if you live alone."

Blacktown Meals on Wheels manager Rebecca Waterhouse said the service played a large part in the lives of many elderly Australians across the nation.